1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
from __future__ import annotations
import logging
import re
import sys
import typing as t
from datetime import datetime
from datetime import timezone
if t.TYPE_CHECKING:
from _typeshed.wsgi import WSGIEnvironment
from .wrappers.request import Request
_logger: logging.Logger | None = None
class _Missing:
def __repr__(self) -> str:
return "no value"
def __reduce__(self) -> str:
return "_missing"
_missing = _Missing()
def _wsgi_decoding_dance(s: str) -> str:
return s.encode("latin1").decode(errors="replace")
def _wsgi_encoding_dance(s: str) -> str:
return s.encode().decode("latin1")
def _get_environ(obj: WSGIEnvironment | Request) -> WSGIEnvironment:
env = getattr(obj, "environ", obj)
assert isinstance(
env, dict
), f"{type(obj).__name__!r} is not a WSGI environment (has to be a dict)"
return env
def _has_level_handler(logger: logging.Logger) -> bool:
"""Check if there is a handler in the logging chain that will handle
the given logger's effective level.
"""
level = logger.getEffectiveLevel()
current = logger
while current:
if any(handler.level <= level for handler in current.handlers):
return True
if not current.propagate:
break
current = current.parent # type: ignore
return False
class _ColorStreamHandler(logging.StreamHandler): # type: ignore[type-arg]
"""On Windows, wrap stream with Colorama for ANSI style support."""
def __init__(self) -> None:
try:
import colorama
except ImportError:
stream = None
else:
stream = colorama.AnsiToWin32(sys.stderr)
super().__init__(stream)
def _log(type: str, message: str, *args: t.Any, **kwargs: t.Any) -> None:
"""Log a message to the 'werkzeug' logger.
The logger is created the first time it is needed. If there is no
level set, it is set to :data:`logging.INFO`. If there is no handler
for the logger's effective level, a :class:`logging.StreamHandler`
is added.
"""
global _logger
if _logger is None:
_logger = logging.getLogger("werkzeug")
if _logger.level == logging.NOTSET:
_logger.setLevel(logging.INFO)
if not _has_level_handler(_logger):
_logger.addHandler(_ColorStreamHandler())
getattr(_logger, type)(message.rstrip(), *args, **kwargs)
@t.overload
def _dt_as_utc(dt: None) -> None: ...
@t.overload
def _dt_as_utc(dt: datetime) -> datetime: ...
def _dt_as_utc(dt: datetime | None) -> datetime | None:
if dt is None:
return dt
if dt.tzinfo is None:
return dt.replace(tzinfo=timezone.utc)
elif dt.tzinfo != timezone.utc:
return dt.astimezone(timezone.utc)
return dt
_TAccessorValue = t.TypeVar("_TAccessorValue")
class _DictAccessorProperty(t.Generic[_TAccessorValue]):
"""Baseclass for `environ_property` and `header_property`."""
read_only = False
def __init__(
self,
name: str,
default: _TAccessorValue | None = None,
load_func: t.Callable[[str], _TAccessorValue] | None = None,
dump_func: t.Callable[[_TAccessorValue], str] | None = None,
read_only: bool | None = None,
doc: str | None = None,
) -> None:
self.name = name
self.default = default
self.load_func = load_func
self.dump_func = dump_func
if read_only is not None:
self.read_only = read_only
self.__doc__ = doc
def lookup(self, instance: t.Any) -> t.MutableMapping[str, t.Any]:
raise NotImplementedError
@t.overload
def __get__(
self, instance: None, owner: type
) -> _DictAccessorProperty[_TAccessorValue]: ...
@t.overload
def __get__(self, instance: t.Any, owner: type) -> _TAccessorValue: ...
def __get__(
self, instance: t.Any | None, owner: type
) -> _TAccessorValue | _DictAccessorProperty[_TAccessorValue]:
if instance is None:
return self
storage = self.lookup(instance)
if self.name not in storage:
return self.default # type: ignore
value = storage[self.name]
if self.load_func is not None:
try:
return self.load_func(value)
except (ValueError, TypeError):
return self.default # type: ignore
return value # type: ignore
def __set__(self, instance: t.Any, value: _TAccessorValue) -> None:
if self.read_only:
raise AttributeError("read only property")
if self.dump_func is not None:
self.lookup(instance)[self.name] = self.dump_func(value)
else:
self.lookup(instance)[self.name] = value
def __delete__(self, instance: t.Any) -> None:
if self.read_only:
raise AttributeError("read only property")
self.lookup(instance).pop(self.name, None)
def __repr__(self) -> str:
return f"<{type(self).__name__} {self.name}>"
_plain_int_re = re.compile(r"-?\d+", re.ASCII)
def _plain_int(value: str) -> int:
"""Parse an int only if it is only ASCII digits and ``-``.
This disallows ``+``, ``_``, and non-ASCII digits, which are accepted by ``int`` but
are not allowed in HTTP header values.
Any leading or trailing whitespace is stripped
"""
value = value.strip()
if _plain_int_re.fullmatch(value) is None:
raise ValueError
return int(value)
|
